US5502422A - Filter with an adjustable shunt zero - Google Patents
Filter with an adjustable shunt zero Download PDFInfo
- Publication number
- US5502422A US5502422A US08/289,816 US28981694A US5502422A US 5502422 A US5502422 A US 5502422A US 28981694 A US28981694 A US 28981694A US 5502422 A US5502422 A US 5502422A
- Authority
- US
- United States
- Prior art keywords
- filter
- output
- variable
- input
- resonant circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
- H01P1/2056—Comb filters or interdigital filters with metallised resonator holes in a dielectric block
Abstract
Description
Claims (16)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/289,816 US5502422A (en) | 1994-08-12 | 1994-08-12 | Filter with an adjustable shunt zero |
PCT/US1995/008042 WO1996005628A1 (en) | 1994-08-12 | 1995-06-26 | A filter with an adjustable shunt zero |
AU29985/95A AU2998595A (en) | 1994-08-12 | 1995-06-26 | A filter with an adjustable shunt zero |
CN95190759.XA CN1122325C (en) | 1994-08-12 | 1995-06-26 | Filter with adjustable shunt zero |
EP95926113A EP0723709A4 (en) | 1994-08-12 | 1995-06-26 | A filter with an adjustable shunt zero |
JP8507298A JPH09504157A (en) | 1994-08-12 | 1995-06-26 | Filter with adjustable shunt zero |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/289,816 US5502422A (en) | 1994-08-12 | 1994-08-12 | Filter with an adjustable shunt zero |
Publications (1)
Publication Number | Publication Date |
---|---|
US5502422A true US5502422A (en) | 1996-03-26 |
Family
ID=23113220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/289,816 Expired - Lifetime US5502422A (en) | 1994-08-12 | 1994-08-12 | Filter with an adjustable shunt zero |
Country Status (6)
Country | Link |
---|---|
US (1) | US5502422A (en) |
EP (1) | EP0723709A4 (en) |
JP (1) | JPH09504157A (en) |
CN (1) | CN1122325C (en) |
AU (1) | AU2998595A (en) |
WO (1) | WO1996005628A1 (en) |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5994978A (en) * | 1998-02-17 | 1999-11-30 | Cts Corporation | Partially interdigitated combline ceramic filter |
US6111482A (en) * | 1997-05-30 | 2000-08-29 | Murata Manufacturing Co., Ltd. | Dielectric variable-frequency filter having a variable capacitance connected to a resonator |
WO2002049142A1 (en) * | 2000-12-12 | 2002-06-20 | Paratek Microwave, Inc. | Electronic tunable filters with dielectric varactors |
US20020149439A1 (en) * | 2001-04-11 | 2002-10-17 | Toncich Stanley S. | Tunable isolator |
US6570467B2 (en) | 2000-03-09 | 2003-05-27 | Cts Corporation | Cost effective dual-mode shiftable dielectric RF filter and duplexer |
US20030184409A1 (en) * | 2002-03-29 | 2003-10-02 | Hidefumi Suzuki | Dielectric electronic component with attenuation adjustment electrode and method of adjusting attenuation characteristics of the same |
US20040263411A1 (en) * | 2002-02-12 | 2004-12-30 | Jorge Fabrega-Sanchez | System and method for dual-band antenna matching |
US20050007291A1 (en) * | 2002-02-12 | 2005-01-13 | Jorge Fabrega-Sanchez | System and method for impedance matching an antenna to sub-bands in a communication band |
US20050057414A1 (en) * | 2001-04-11 | 2005-03-17 | Gregory Poilasne | Reconfigurable radiation desensitivity bracket systems and methods |
US20050057322A1 (en) * | 2001-04-11 | 2005-03-17 | Toncich Stanley S. | Apparatus and method for combining electrical signals |
US20050085204A1 (en) * | 2002-02-12 | 2005-04-21 | Gregory Poilasne | Full-duplex antenna system and method |
US20050083234A1 (en) * | 2001-04-11 | 2005-04-21 | Gregory Poilasne | Wireless device reconfigurable radiation desensitivity bracket systems and methods |
US20050148312A1 (en) * | 2001-04-11 | 2005-07-07 | Toncich Stanley S. | Bandpass filter with tunable resonator |
US20050207518A1 (en) * | 2001-04-11 | 2005-09-22 | Toncich Stanley S | Constant-gain phase shifter |
US20060009174A1 (en) * | 2004-07-09 | 2006-01-12 | Doug Dunn | Variable-loss transmitter and method of operation |
US7071776B2 (en) | 2001-10-22 | 2006-07-04 | Kyocera Wireless Corp. | Systems and methods for controlling output power in a communication device |
WO2006127369A2 (en) | 2005-05-24 | 2006-11-30 | Cts Corporation | Filter with multiple shunt zeros |
US7164329B2 (en) | 2001-04-11 | 2007-01-16 | Kyocera Wireless Corp. | Tunable phase shifer with a control signal generator responsive to DC offset in a mixed signal |
US20070135160A1 (en) * | 2005-11-30 | 2007-06-14 | Jorge Fabrega-Sanchez | Method for tuning a GPS antenna matching network |
US20090152739A1 (en) * | 2007-12-13 | 2009-06-18 | Ahmadreza Rofougaran | Method and system for filters embedded in an integrated circuit package |
US7720443B2 (en) | 2003-06-02 | 2010-05-18 | Kyocera Wireless Corp. | System and method for filtering time division multiple access telephone communications |
US20140092795A1 (en) * | 2012-10-02 | 2014-04-03 | Rf Micro Devices, Inc. | Tunable diplexer for carrier aggregation applications |
US20140334362A1 (en) * | 2012-10-02 | 2014-11-13 | Rf Micro Devices, Inc. | Tunable diplexer |
US9078211B2 (en) | 2012-10-11 | 2015-07-07 | Rf Micro Devices, Inc. | Power management configuration for TX MIMO and UL carrier aggregation |
US9118100B2 (en) | 2012-06-18 | 2015-08-25 | Rf Micro Devices, Inc. | Antenna switching circuitry for a worldphone radio interface |
US9143208B2 (en) | 2012-07-18 | 2015-09-22 | Rf Micro Devices, Inc. | Radio front end having reduced diversity switch linearity requirement |
US9172441B2 (en) | 2013-02-08 | 2015-10-27 | Rf Micro Devices, Inc. | Front end circuitry for carrier aggregation configurations |
US9220067B2 (en) | 2011-05-02 | 2015-12-22 | Rf Micro Devices, Inc. | Front end radio architecture (FERA) with power management |
US9219594B2 (en) | 2012-06-18 | 2015-12-22 | Rf Micro Devices, Inc. | Dual antenna integrated carrier aggregation front end solution |
US9515362B2 (en) | 2010-08-25 | 2016-12-06 | Commscope Technologies Llc | Tunable bandpass filter |
US9991065B2 (en) | 2012-07-11 | 2018-06-05 | Qorvo Us, Inc. | Contact MEMS architecture for improved cycle count and hot-switching and ESD |
CN116915202A (en) * | 2023-09-14 | 2023-10-20 | 成都世源频控技术股份有限公司 | LC band-pass filter with adjustable transmission zero point |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3613156B2 (en) | 2000-01-18 | 2005-01-26 | 株式会社村田製作所 | Dielectric filter, antenna duplexer, and communication device |
US8742871B2 (en) * | 2011-03-10 | 2014-06-03 | Taiwan Semiconductor Manufacturing Co., Ltd. | Devices and bandpass filters therein having at least three transmission zeroes |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4835499A (en) * | 1988-03-09 | 1989-05-30 | Motorola, Inc. | Voltage tunable bandpass filter |
WO1990013943A1 (en) * | 1989-05-02 | 1990-11-15 | Telenokia Oy | A high-frequency bandpass filter |
US5227748A (en) * | 1990-08-16 | 1993-07-13 | Technophone Limited | Filter with electrically adjustable attenuation characteristic |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5241291A (en) * | 1991-07-05 | 1993-08-31 | Motorola, Inc. | Transmission line filter having a varactor for tuning a transmission zero |
JP3205337B2 (en) * | 1992-05-26 | 2001-09-04 | シーティーエス・コーポレーション | Multiple passband dielectric filter structure |
-
1994
- 1994-08-12 US US08/289,816 patent/US5502422A/en not_active Expired - Lifetime
-
1995
- 1995-06-26 EP EP95926113A patent/EP0723709A4/en not_active Ceased
- 1995-06-26 WO PCT/US1995/008042 patent/WO1996005628A1/en not_active Application Discontinuation
- 1995-06-26 AU AU29985/95A patent/AU2998595A/en not_active Abandoned
- 1995-06-26 JP JP8507298A patent/JPH09504157A/en not_active Ceased
- 1995-06-26 CN CN95190759.XA patent/CN1122325C/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4835499A (en) * | 1988-03-09 | 1989-05-30 | Motorola, Inc. | Voltage tunable bandpass filter |
WO1990013943A1 (en) * | 1989-05-02 | 1990-11-15 | Telenokia Oy | A high-frequency bandpass filter |
US5227748A (en) * | 1990-08-16 | 1993-07-13 | Technophone Limited | Filter with electrically adjustable attenuation characteristic |
Cited By (71)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6111482A (en) * | 1997-05-30 | 2000-08-29 | Murata Manufacturing Co., Ltd. | Dielectric variable-frequency filter having a variable capacitance connected to a resonator |
US5994978A (en) * | 1998-02-17 | 1999-11-30 | Cts Corporation | Partially interdigitated combline ceramic filter |
US6570467B2 (en) | 2000-03-09 | 2003-05-27 | Cts Corporation | Cost effective dual-mode shiftable dielectric RF filter and duplexer |
US6686817B2 (en) | 2000-12-12 | 2004-02-03 | Paratek Microwave, Inc. | Electronic tunable filters with dielectric varactors |
WO2002049142A1 (en) * | 2000-12-12 | 2002-06-20 | Paratek Microwave, Inc. | Electronic tunable filters with dielectric varactors |
US6903633B2 (en) | 2000-12-12 | 2005-06-07 | Paratek Microwave, Inc. | Electronic tunable filters with dielectric varactors |
US20040070471A1 (en) * | 2000-12-12 | 2004-04-15 | Yongfei Zhu | Electronic tunable filters with dielectric varactors |
US7221243B2 (en) | 2001-04-11 | 2007-05-22 | Kyocera Wireless Corp. | Apparatus and method for combining electrical signals |
US7116954B2 (en) | 2001-04-11 | 2006-10-03 | Kyocera Wireless Corp. | Tunable bandpass filter and method thereof |
US20100127950A1 (en) * | 2001-04-11 | 2010-05-27 | Gregory Poilasne | Reconfigurable radiation densensitivity bracket systems and methods |
US7746292B2 (en) | 2001-04-11 | 2010-06-29 | Kyocera Wireless Corp. | Reconfigurable radiation desensitivity bracket systems and methods |
US20050057414A1 (en) * | 2001-04-11 | 2005-03-17 | Gregory Poilasne | Reconfigurable radiation desensitivity bracket systems and methods |
US20050057322A1 (en) * | 2001-04-11 | 2005-03-17 | Toncich Stanley S. | Apparatus and method for combining electrical signals |
US7265643B2 (en) | 2001-04-11 | 2007-09-04 | Kyocera Wireless Corp. | Tunable isolator |
US20050083234A1 (en) * | 2001-04-11 | 2005-04-21 | Gregory Poilasne | Wireless device reconfigurable radiation desensitivity bracket systems and methods |
US20050085200A1 (en) * | 2001-04-11 | 2005-04-21 | Toncich Stanley S. | Antenna interface unit |
US20050095998A1 (en) * | 2001-04-11 | 2005-05-05 | Toncich Stanley S. | Tunable matching circuit |
US7509100B2 (en) | 2001-04-11 | 2009-03-24 | Kyocera Wireless Corp. | Antenna interface unit |
US20050148312A1 (en) * | 2001-04-11 | 2005-07-07 | Toncich Stanley S. | Bandpass filter with tunable resonator |
US8237620B2 (en) | 2001-04-11 | 2012-08-07 | Kyocera Corporation | Reconfigurable radiation densensitivity bracket systems and methods |
US20050207518A1 (en) * | 2001-04-11 | 2005-09-22 | Toncich Stanley S | Constant-gain phase shifter |
US20020149439A1 (en) * | 2001-04-11 | 2002-10-17 | Toncich Stanley S. | Tunable isolator |
US7221327B2 (en) | 2001-04-11 | 2007-05-22 | Kyocera Wireless Corp. | Tunable matching circuit |
US7174147B2 (en) | 2001-04-11 | 2007-02-06 | Kyocera Wireless Corp. | Bandpass filter with tunable resonator |
US7164329B2 (en) | 2001-04-11 | 2007-01-16 | Kyocera Wireless Corp. | Tunable phase shifer with a control signal generator responsive to DC offset in a mixed signal |
US7394430B2 (en) | 2001-04-11 | 2008-07-01 | Kyocera Wireless Corp. | Wireless device reconfigurable radiation desensitivity bracket systems and methods |
US7154440B2 (en) | 2001-04-11 | 2006-12-26 | Kyocera Wireless Corp. | Phase array antenna using a constant-gain phase shifter |
US7071776B2 (en) | 2001-10-22 | 2006-07-04 | Kyocera Wireless Corp. | Systems and methods for controlling output power in a communication device |
US20050085204A1 (en) * | 2002-02-12 | 2005-04-21 | Gregory Poilasne | Full-duplex antenna system and method |
US7176845B2 (en) | 2002-02-12 | 2007-02-13 | Kyocera Wireless Corp. | System and method for impedance matching an antenna to sub-bands in a communication band |
US20050007291A1 (en) * | 2002-02-12 | 2005-01-13 | Jorge Fabrega-Sanchez | System and method for impedance matching an antenna to sub-bands in a communication band |
US7180467B2 (en) | 2002-02-12 | 2007-02-20 | Kyocera Wireless Corp. | System and method for dual-band antenna matching |
US7184727B2 (en) | 2002-02-12 | 2007-02-27 | Kyocera Wireless Corp. | Full-duplex antenna system and method |
US20040263411A1 (en) * | 2002-02-12 | 2004-12-30 | Jorge Fabrega-Sanchez | System and method for dual-band antenna matching |
US20030184409A1 (en) * | 2002-03-29 | 2003-10-02 | Hidefumi Suzuki | Dielectric electronic component with attenuation adjustment electrode and method of adjusting attenuation characteristics of the same |
US6949987B2 (en) | 2002-03-29 | 2005-09-27 | Ngk Spark Plug Co., Ltd | Dielectric electronic component with attenuation adjustment electrode and method of adjusting attenuation characteristics of the same |
GB2388719B (en) * | 2002-03-29 | 2005-08-31 | Ngk Spark Plug Co | Dielectric electronic component with attenuation adjustment electrode and method of adjusting attenuation characteristics of the same |
GB2388719A (en) * | 2002-03-29 | 2003-11-19 | Ngk Spark Plug Co | Dielectric component with attenuation adjustment electrode and method of adjusting attenuation characteristics of the same |
US8478205B2 (en) | 2003-06-02 | 2013-07-02 | Kyocera Corporation | System and method for filtering time division multiple access telephone communications |
US7720443B2 (en) | 2003-06-02 | 2010-05-18 | Kyocera Wireless Corp. | System and method for filtering time division multiple access telephone communications |
US20060009174A1 (en) * | 2004-07-09 | 2006-01-12 | Doug Dunn | Variable-loss transmitter and method of operation |
US7248845B2 (en) | 2004-07-09 | 2007-07-24 | Kyocera Wireless Corp. | Variable-loss transmitter and method of operation |
WO2006127369A3 (en) * | 2005-05-24 | 2007-02-15 | Cts Corp | Filter with multiple shunt zeros |
US20090231062A1 (en) * | 2005-05-24 | 2009-09-17 | Justin Russell Morga | Filter with multiple shunt zeros |
US7545240B2 (en) | 2005-05-24 | 2009-06-09 | Cts Corporation | Filter with multiple shunt zeros |
US7952452B2 (en) | 2005-05-24 | 2011-05-31 | Cts Corporation | Filter with multiple in-line shunt zeros |
WO2006127369A2 (en) | 2005-05-24 | 2006-11-30 | Cts Corporation | Filter with multiple shunt zeros |
US7548762B2 (en) | 2005-11-30 | 2009-06-16 | Kyocera Corporation | Method for tuning a GPS antenna matching network |
US20070135160A1 (en) * | 2005-11-30 | 2007-06-14 | Jorge Fabrega-Sanchez | Method for tuning a GPS antenna matching network |
US20090152739A1 (en) * | 2007-12-13 | 2009-06-18 | Ahmadreza Rofougaran | Method and system for filters embedded in an integrated circuit package |
US8134425B2 (en) * | 2007-12-13 | 2012-03-13 | Broadcom Corporation | Method and system for filters embedded in an integrated circuit package |
US20120169432A1 (en) * | 2007-12-13 | 2012-07-05 | Broadcom Corporation | IC Package With Embedded Filters |
US8659369B2 (en) * | 2007-12-13 | 2014-02-25 | Broadcom Corporation | IC package with embedded filters |
US9515362B2 (en) | 2010-08-25 | 2016-12-06 | Commscope Technologies Llc | Tunable bandpass filter |
US9220067B2 (en) | 2011-05-02 | 2015-12-22 | Rf Micro Devices, Inc. | Front end radio architecture (FERA) with power management |
US10298288B2 (en) | 2012-06-18 | 2019-05-21 | Qorvo Us, Inc. | Antenna switching circuitry for MIMO/diversity modes |
US9979433B2 (en) | 2012-06-18 | 2018-05-22 | Qorvo Us, Inc. | RF front-end circuitry with transistor and microelectromechanical multiple throw switches |
US10009058B2 (en) | 2012-06-18 | 2018-06-26 | Qorvo Us, Inc. | RF front-end circuitry for receive MIMO signals |
US9118100B2 (en) | 2012-06-18 | 2015-08-25 | Rf Micro Devices, Inc. | Antenna switching circuitry for a worldphone radio interface |
US10250290B2 (en) | 2012-06-18 | 2019-04-02 | Qorvo Us, Inc. | Front end switching circuitry for carrier aggregation |
US9219594B2 (en) | 2012-06-18 | 2015-12-22 | Rf Micro Devices, Inc. | Dual antenna integrated carrier aggregation front end solution |
US9991065B2 (en) | 2012-07-11 | 2018-06-05 | Qorvo Us, Inc. | Contact MEMS architecture for improved cycle count and hot-switching and ESD |
US9143208B2 (en) | 2012-07-18 | 2015-09-22 | Rf Micro Devices, Inc. | Radio front end having reduced diversity switch linearity requirement |
US9203596B2 (en) * | 2012-10-02 | 2015-12-01 | Rf Micro Devices, Inc. | Tunable diplexer for carrier aggregation applications |
US20140334362A1 (en) * | 2012-10-02 | 2014-11-13 | Rf Micro Devices, Inc. | Tunable diplexer |
US9419775B2 (en) * | 2012-10-02 | 2016-08-16 | Qorvo Us, Inc. | Tunable diplexer |
US20140092795A1 (en) * | 2012-10-02 | 2014-04-03 | Rf Micro Devices, Inc. | Tunable diplexer for carrier aggregation applications |
US9078211B2 (en) | 2012-10-11 | 2015-07-07 | Rf Micro Devices, Inc. | Power management configuration for TX MIMO and UL carrier aggregation |
US9172441B2 (en) | 2013-02-08 | 2015-10-27 | Rf Micro Devices, Inc. | Front end circuitry for carrier aggregation configurations |
CN116915202A (en) * | 2023-09-14 | 2023-10-20 | 成都世源频控技术股份有限公司 | LC band-pass filter with adjustable transmission zero point |
CN116915202B (en) * | 2023-09-14 | 2023-12-29 | 成都世源频控技术股份有限公司 | LC band-pass filter with adjustable transmission zero point |
Also Published As
Publication number | Publication date |
---|---|
EP0723709A4 (en) | 1996-12-27 |
CN1132004A (en) | 1996-09-25 |
AU2998595A (en) | 1996-03-07 |
CN1122325C (en) | 2003-09-24 |
WO1996005628A1 (en) | 1996-02-22 |
EP0723709A1 (en) | 1996-07-31 |
JPH09504157A (en) | 1997-04-22 |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: MOTOROLA, INC. CORPORATE OFFICES, ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HEINE, DAVID;SOKOLA, RAYMOND;NEWELL, MICHAEL;REEL/FRAME:007233/0492 Effective date: 19941031 |
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STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
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AS | Assignment |
Owner name: CTS CORPORATION, INDIANA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MOTOROLA, INC., A CORPORATION OF DELAWARE;REEL/FRAME:009808/0378 Effective date: 19990226 |
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Owner name: CTS CORPORATION, INDIANA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MOTOROLA, INC.;REEL/FRAME:010052/0293 Effective date: 19990610 |
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